Heya, i use Mac Studio fix fluid foundation in shade NC15. It costs me �19 a bottle but lasts me a few months wearing everyday! Mac is good see in ever shade, they have an NC - which is for people with yellow tones in their skin, and an NW for people with pinky tones in their skin. If you go into a Mac store they will be able to give you a colour match.
http://www.maccosmetics.co.uk/templates/produc ts/sp.tmpl?CATEGORY_ID=CAT4723&PRODUCT_ID=PROD 66484
That is the studio fix one that I use. It stays matte all day and stays on all day! Sometimes I have even fallen asleep after a night out in it and woken up and its still on!
Good luck :)